The SAE processes each individual tile as orchastrated
by SAM. There are two algorithms available to upgrade spatial data:

Least Squares Adjustment Algorithm
Least Squares Adjustment Technique is generally preferred as it does provide
the higest quality result, normally in reasonable times. For further reading
on this algorithm see links below.

The Best Guess Algortihm
The Best Guess Algorithm, whilst not returning the best results, most
often returns acceptable results in a fraction of the time. It has been
found to be more than adequate in some scenarios.

SAM OrthoPhotos is used to upgrade the orthophotgraphy digital cadastre
and requires an operator to select matching points in the raster and vector
layers. The speed of the Best Guess algorithm is sufficient to make the
process fairly interactive. After running the Best Guess algorithm while
interactively capturing matching points, the Least Squares Adjustment
algorithm can still be run to generate the final results.

The second situation where the Best Guess algorithm is the preferred
solution is in utility upgrades where the utility layers are extremely
detailed, being more of a cartographic product.

• Further, the Spatial Adjustment Engine has been designed
right from the beginning to be scaleable, in all respects. This means
1. Small areas to large areas
2. Types of adjustments, including Road Centreline Upgrades using GPS,
Utility Upgrades caused by upgraded Cadastre, and DCDB Upgrades to more
accurately represent the true location of each parcel.
3. The SAE allows great flexibility in adding various types of control,
now and in the future, from State Survey Marks, Deposited Plans, known
bearings and distances, parallel lines, inclined lines, straight lines,
etc.